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本文提出地形图纸等高线的矢量化,进而提出生成三维地形模型的工程问题,阐述了扫描、预处理、细化等步骤...
本文提出地形图纸等高线的矢量化,进而提出生成三维地形模型的工程问题,阐述了扫描、预处理、细化等步骤-terrain contour drawings of vectorization, leading to formation of three-dimensional terrain model works, expounded the scanning, pretreatment steps such as thinning
- 2022-05-29 11:37:42下载
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这个源代码是非常有用的,可以检测到三角形状的边缘,也可以…
This source code is very useful to detect the edge of triangle shape.It also can be applied to calculate the perimeter of triangle.
- 2023-01-21 05:15:03下载
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本文结合DCT变换的特性,利用分形的Peano一hilbert扫描曲线,对基于DCT变换的图像编码方法进行了研究,并提出了改进方法。主要工作分为两个部分: 一是...
本文结合DCT变换的特性,利用分形的Peano一hilbert扫描曲线,对基于DCT变换的图像编码方法进行了研究,并提出了改进方法。主要工作分为两个部分: 一是在分块DCT基础上的改进。对分块后生成的各图像块矩阵,不直接作二维DCT变换,而是先进行扫描,使之重排成一维向量,再进行一维DCT变换,这样可以减少运算量。 其次是对层次余弦变换编码部分的改进。使用层次DCT变换与零树编码相结合的方法,并在扫描编码过程中,按Peano一hilbert扫描顺序进行编码。这样不仅可以减少“块效应”,而且可以加快编码速度。-this paper the characteristics of DCT, using fractal Peano a Hilbert scanning curve, the DCT-based image coding method for the study and improvement of methods. The work is divided into two main parts : First, the DCT block on the basis of improvements. Right after block production of the image block matrix, not for direct two-dimensional DCT, but first scan, so they line up in a heavy-dimensional vector and then a peacekeeping DCT, thus reducing the amount of computation. Secondly, the level of cosine transform coding some of the improvements. The use level of DCT and zero tree coding combination of methods, coding and scanning process, according to a Hilbert Peano code scanning sequence. This will not only reduce the "blocking
- 2022-07-20 17:37:33下载
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MapXtreme for Java 3.x开发指南1
MapXtreme for Java 3.x开发指南1-MapXtreme Java 3.x for the development of a Guide
- 2022-03-11 22:27:51下载
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Simple example VHDL code for registers
Simple example VHDL code for registers
- 2022-06-27 01:11:14下载
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try a different ui demo
try a different ui demo
- 2023-08-22 00:10:04下载
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mapgis_ims_asp
mapgis_ims_asp
- 2022-01-31 06:00:10下载
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Hainan Province in 2009 the latest vector map (MapInfo format)
海南省09年最新矢量地图(MapInfo格式)-Hainan Province in 2009 the latest vector map (MapInfo format)
- 2022-07-12 09:23:06下载
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Database Connection shapmap source code,. NET freame
shapmap数据库连接源代码,.NET freame-Database Connection shapmap source code,. NET freame
- 2022-03-06 23:26:46下载
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一个用vb对mapinfo做二次开发的例子,此例子的功能虽然简单,但含盖了很多知识点,如mapinfo的回调,各种空间功能的实现等...
一个用vb对mapinfo做二次开发的例子,此例子的功能虽然简单,但含盖了很多知识点,如mapinfo的回调,各种空间功能的实现等-with a pair of MapInfo do the secondary development of examples, examples of this function is simple, it covers a lot of knowledge, such as MapInfo callback, the space functional realization
- 2023-07-04 02:30:03下载
- 积分:1